Evaluation of significance of spray evaporation in the atmospheric surface layer for computing the trajectory and intensity of tropical cyclones

Abstract

The results are presented ofcomputation oftrajectory and intensity oftwo typhoons in 2012 for two groups of parameterization schemes of ocean-atmosphere energy exchange in tropical cyclones (TCs), boundary and surface layers of TCs, radiation fluxes, microphysics, and convection. The surface layer computations were carried out with and without the relationships that take into account the surface layer cool ing due to spray evaporation. It is demonstrated that the accounting of this effect exerts positive influence on the results of TC trajectory modeling at different stages. Ifthere are specific features in TC movement, for example, the loop formation, this improvement may be crucial. The accuracy ofthe results of computation of TC intensity increases as well.